CN116085052B - System and method for monitoring, preventing and controlling slurry leakage in underwater shield tunnel construction water area - Google Patents
System and method for monitoring, preventing and controlling slurry leakage in underwater shield tunnel construction water area Download PDFInfo
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- CN116085052B CN116085052B CN202310361698.9A CN202310361698A CN116085052B CN 116085052 B CN116085052 B CN 116085052B CN 202310361698 A CN202310361698 A CN 202310361698A CN 116085052 B CN116085052 B CN 116085052B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 158
- 238000012544 monitoring process Methods 0.000 title claims abstract description 140
- 239000002002 slurry Substances 0.000 title claims abstract description 64
- 238000010276 construction Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000002347 injection Methods 0.000 claims abstract description 44
- 239000007924 injection Substances 0.000 claims abstract description 44
- 230000001133 acceleration Effects 0.000 claims abstract description 23
- 239000012530 fluid Substances 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 9
- 238000005086 pumping Methods 0.000 claims description 6
- 230000005641 tunneling Effects 0.000 claims description 6
- 238000009412 basement excavation Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 238000004062 sedimentation Methods 0.000 claims description 3
- 208000024891 symptom Diseases 0.000 claims description 3
- 230000002265 prevention Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
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Abstract
The invention aims to solve the technical problem of providing a system and a method for monitoring, preventing and controlling the slurry overflow in a water area of underwater shield tunnel construction, which are used for monitoring the underwater area in a multi-point and surface mode, providing real-time slurry overflow information monitoring for engineering practice and timely preventing slurry overflow, and comprise a pressure-bearing water bag, a water injection and drainage system and a water injection and drainage system; the pressure-bearing water bag is of a flat structure, a plurality of monitoring lines are divided into the inner bottom surface of the pressure-bearing water bag, a plurality of monitoring points are distributed on each monitoring line, and each monitoring point is provided with a wireless pressure sensor and a wireless acceleration sensor; all the wireless pressure sensors and the wireless acceleration sensors are connected with a wireless data receiver through signals; the top surface of the outer part of the pressure-bearing water bag is provided with a water inlet valve, an air inlet valve, a drain valve and an air outlet valve, so that the water injection and drainage system is communicated with the water inlet valve, and the air injection and exhaust system is communicated with the air inlet valve.
Description
Technical Field
The invention belongs to the technical field of geotechnical engineering, in particular to a shield tunnel crossing water area monitoring technology, and particularly relates to a shield tunnel crossing water area monitoring technology
The method relates to a method for monitoring, preventing and controlling slurry leakage in a water area of underwater shield tunnel construction.
Background
The shield is one of the main construction methods for constructing underwater tunnels penetrating through rivers and straits, and is widely applied to urban road tunnels, and the shield tunnel engineering technology is developed to large-depth, large-section and long-distance directions in recent 30 years to build a batch of ultra-large-diameter submarine (river) tunnels and urban road tunnels. The large-diameter shield tunnel is commonly used for highway and railway tunnel construction due to the high efficiency and durability. With the tunneling speed and crossing of shield tunnel
The need for tunnel surface monitoring is increasing due to the advancement of formation technology.
For large-diameter shield tunnels to pass through water areas such as sea, river, reservoir and the like, the monitoring of the earth surface of the water area is often difficult, however, when the large-diameter shield tunnels pass through the water area, the shield is easy to cause the phenomenon of slurry overflow on the underwater ground due to high water content of the underwater geology. Therefore, the slurry overflow point needs to be monitored and plugged in time to prevent the slurry overflow from further expanding, and the existing surface monitoring method of the water area is mainly instrument monitoring due to the specificity of the water area. The instrument monitoring is mostly a radar monitoring system, but is greatly influenced by a water area, the implementation difficulty is high, the equipment cost is high, and the plugging is not timely.
Disclosure of Invention
The invention aims to solve the technical problem of providing a method for monitoring, preventing and controlling the slurry overflow of an underwater shield tunnel construction water area, carrying out multipoint and surface monitoring on the underwater area, actually providing real-time slurry overflow information monitoring for engineering and timely preventing slurry overflow.
The invention is realized by the following technical scheme:
the system comprises a pressure-bearing water bag, a water injection and drainage system and an air injection and exhaust system;
the pressure-bearing water bag is of a flat structure, a plurality of monitoring lines are divided into the inner bottom surface of the pressure-bearing water bag, a plurality of monitoring points are distributed on each monitoring line, and each monitoring point is provided with a wireless pressure sensor and a wireless acceleration sensor; all the wireless pressure sensors and the wireless acceleration sensors are connected with a wireless data receiver through signals;
the top surface of the outer part of the pressure-bearing water bag is provided with a water inlet valve, an air inlet valve, a drain valve and an air outlet valve, so that the water injection and drainage system is communicated with the water inlet valve, and the air injection and exhaust system is communicated with the air inlet valve.
Further, the height difference of the monitoring lines is smaller than 200mm.
Further, the size of the pressure-bearing water bag is 7-8m long and 5-6m wide.
Further, the monitoring line is perpendicular to the tunnel direction or parallel to the tunnel direction.
Further, the water injection and drainage system comprises a water tank, a pressure water pump and a water suction pump, and the air injection and exhaust system comprises an air compressor and a vacuum pump.
The invention relates to a method for monitoring, preventing and controlling slurry overflow in a water area of underwater shield tunnel construction, which comprises the following steps:
s1, dividing the inner bottom surface of a pressure-bearing water bag into a plurality of monitoring lines, wherein a plurality of monitoring points are distributed on each monitoring line, and each monitoring point is provided with a wireless pressure sensor and a wireless acceleration sensor; all the wireless pressure sensors and the wireless acceleration sensors are connected with a wireless data receiver through signals;
s2, correspondingly communicating the water injection and drainage system and the air injection and drainage system with a water inlet valve, a water drain valve, an air inlet valve and an air drain valve of the pressure-bearing air bag through pipelines, releasing the pressure-bearing air bag on the water surface above the monitoring area, pumping the pressure-bearing air bag through the air injection and drainage system, injecting liquid into the pressure-bearing air bag through the air injection and drainage system, and sinking the pressure-bearing air bag to the monitoring surface;
s3, monitoring in real time through feedback signals of the wireless pressure sensors and the wireless acceleration sensors of all monitoring points, measuring the ground pressure changes before, during and after tunnel excavation, judging whether slurry overflow occurs on a monitoring surface, and determining the slurry overflow position and the slurry overflow area according to the quantity and the range of the pressure value changes of the monitoring points;
s4, when the monitoring surface is judged to be in slurry overflow, injecting liquid into the pressure-bearing water bag through the water injection and drainage system to pressurize the pressure-bearing water bag, so that the pressure-bearing water bag is tightly attached to the monitoring surface, further expansion of slurry overflow is prevented, and meanwhile, the slurry conveying, discharging and tunneling speed of the shield machine is adjusted;
s5, when the pressure-bearing water bag needs to be moved to the next monitoring surface, pumping water to the pressure-bearing water bag through the water injection and drainage system, and conveying gas through a plurality of pressure-bearing water bags of the water injection and drainage system, so that the pressure-bearing water bag rises to the water surface and then moves integrally.
Further, in step S3, the height of the starting position of each monitoring point is set to be 0, the water pressure is set to be P, the water pressure meter readings of the monitoring points are p+Δp, and the air bag bulge value Δz of each monitoring point can be deduced from the following formulas (1) to (3) through the water pressure change value Δp of each monitoring point:
wherein:
Sedimentation swell value
(4)
Then, each monitoring point DeltaZ is drawn, and the points are connected to form a line to obtain the air bag bulge of the monitoring pipeline
And the deformation curve is used for assisting in judging the slurry-rising position and the area size through the bulge deformation curve of the air bag.
Compared with the prior art, the invention has the following beneficial effects:
1. a plurality of monitoring points are distributed on the monitoring line, and a wireless pressure sensor and a wireless acceleration sensor are arranged on the monitoring points; the ground pressure changes before, during and after tunnel excavation are measured through the feedback signals of the wireless pressure sensors and the wireless acceleration sensors of all the monitoring points in real time so as to judge whether slurry overflow occurs on the monitoring surface, and the slurry overflow position and the slurry overflow area are determined according to the quantity and the range of the pressure value changes of the monitoring points; when the monitoring surface is judged to be in slurry overflow, the liquid is injected into the pressure-bearing water bag through the water injection and drainage system to pressurize the pressure-bearing water bag, so that the pressure-bearing water bag is tightly attached to the monitoring surface, the slurry overflow is prevented from being further expanded, and the slurry conveying and draining and tunneling speed of the shield tunneling machine is adjusted;
the underwater shield tunnel construction water area slurry overflow monitoring and prevention and control system can form regional monitoring points, realize large-scale monitoring, and has the advantages of accurate monitoring, simple and convenient operation and low cost;
by the underwater shield tunnel construction water area slurry overflow monitoring and preventing and controlling method, slurry overflow points can be rapidly monitored, the slurry overflow position and the slurry overflow area can be judged, and the slurry overflow position can be blocked by the pressure-bearing air bag, so that the slurry overflow is prevented from being enlarged;
2. the air bag bulge value delta Z of each monitoring point can be obtained by drawing each monitoring point delta Z through the water pressure change value delta P of each monitoring point and connecting each point to form a line, the air bag bulge deformation curve of the monitoring pipeline is obtained, the air bag bulge deformation curve is used for assisting in judging the slurry discharge position, the area size and the slurry discharge degree, and more accurate slurry discharge information is obtained.
Drawings
FIG. 1 is a schematic diagram of a system for monitoring, preventing and controlling slurry overflow in a water area for constructing an underwater shield tunnel;
FIG. 2 is a schematic diagram of a bottom monitoring line in a pressure-bearing water bag;
in the figure: 1. a pressure-bearing water bag 2, a wireless pressure sensor 3, a wireless acceleration sensor 4, a water inlet valve 5 and an air inlet valve, 6, a drain valve, 7, an exhaust valve, 8, a pressure water pump, 9, a water pump, 10, an air compressor, 11 and a vacuum pump.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings of the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the present application without making any inventive effort, are intended to be within the scope of the present application.
In the description of the invention, it should be understood that the terms "front," "rear," "upper," "lower," "left," "right," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience in describing the invention and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention. The invention will be further described with reference to the drawings and examples.
As shown in fig. 1-2, the embodiment discloses a system for monitoring, preventing and controlling slurry overflow in a water area of underwater shield tunnel construction, which mainly comprises a pressure-bearing water bag 1, a water injection and drainage system, an air injection and exhaust system and a wireless data receiver. The pressure-bearing water bag 1 is made of a material with two key physical characteristics of high rebound, strong tensile force, no deformation under internal pressure and flexibility, such as natural latex. The pressure-bearing water bag 1 is of a flat structure, the whole size is 8m long and 5m wide, the inner bottom surface of the pressure-bearing water bag 1 is divided into a plurality of monitoring lines, and the monitoring lines are flexibly arranged according to engineering requirements. In the embodiment, 3 strips can be arranged in the advancing direction of the tunnel shield, 5 strips are arranged in the vertical tunnel direction, the size is freely expanded, and the cost is reduced. The height difference of the monitoring lines is smaller than 200mm, a plurality of monitoring points are distributed on each monitoring line, and a wireless pressure sensor 2 and a wireless acceleration sensor 3 are installed on each monitoring point; all the wireless pressure sensors 2 and the wireless acceleration sensors 3 are in signal connection with a wireless data receiver; the wireless pressure sensor 2 is a 5 mN-10000 mN water pressure meter used for collecting the water pressure of each measuring point, and converts the water pressure into an electric signal to be sent to a wireless data receiver.
The water inlet valve 4, the air inlet valve 5, the drain valve 6 and the air outlet valve 7 are arranged on the outer top surface of the pressure-bearing water bag 1, the water injection and drainage system comprises a water tank, a pressure water pump 8 and a water suction pump 9, the air injection and drainage system comprises an air compressor 10 and a vacuum pump 11, and the water injection and drainage system and the air injection and drainage system are correspondingly communicated with the water inlet valve, the drain valve, the air inlet valve and the air outlet valve of the pressure-bearing water bag through pipelines.
Based on the monitoring, prevention and control system for the slurry overflow monitoring, prevention and control system of the water area of the underwater shield tunnel construction, the embodiment also discloses a method for monitoring, prevention and control of the slurry overflow of the water area of the underwater shield tunnel construction, which comprises the following steps:
s1, dividing the inner bottom surface of a pressure-bearing water bag into a plurality of monitoring lines, wherein a plurality of monitoring points are distributed on each monitoring line, and each monitoring point is provided with a wireless pressure sensor and a wireless acceleration sensor; all the wireless pressure sensors and the wireless acceleration sensors are connected with a wireless data receiver through signals;
s2, correspondingly communicating the water injection and drainage system and the air injection and exhaust system with a water inlet valve, a water outlet valve, an air inlet valve and an air outlet valve of the pressure-bearing air bag through pipelines, releasing the pressure-bearing water bag above a monitoring area, pumping the pressure-bearing air bag through the air injection and exhaust system, filling heavy liquid into the pressure-bearing water bag by the water injection and drainage system, wherein the density of the heavy liquid is greater than that of water, and when the heavy liquid increases, the pressure-bearing water bag sinks to the monitoring area;
s3, real-time monitoring is carried out through feedback signals of wireless pressure sensors and wireless acceleration sensors of all monitoring points, the ground pressure change before, during and after tunnel excavation is measured, the initial position height of each monitoring point is 0, the water pressure is P, the water pressure meter reading of the monitoring point is P+DeltaP, the air bag uplift value DeltaZ of each monitoring point can be deduced through the water pressure change value DeltaP of each monitoring point by the following formulas (1) to (3):
wherein:
Sedimentation swell value
(4)
Then, each monitoring point DeltaZ is drawn, and the points are connected to form a line to obtain the air bag bulge of the monitoring pipeline
The deformation curve is used for assisting in judging the slurry-rising position through the bulge deformation curve of the air bag, and the area size is easily estimated because the distance between each detection point is known;
in this step, it is worth noting that, since the side wall of the pressure-bearing air bag also deforms, in order to reduce the error, a discharge resistive strain gauge can be attached to the side wall, the resistive strain gauge can react to the change of the air bag side wall itself, and then the Δz is corrected;
s4, when the monitoring surface is judged to be in slurry overflow, injecting liquid into the pressure-bearing water bag through the water injection and drainage system to pressurize the pressure-bearing water bag, so that the pressure-bearing water bag is tightly attached to the monitoring surface, further expansion of slurry overflow is prevented, and meanwhile, the slurry conveying, discharging and tunneling speed of the shield machine is adjusted;
s5, when the pressure-bearing water bag needs to be moved to the next monitoring surface, pumping water to the pressure-bearing water bag through the water injection and drainage system, and conveying gas through a plurality of pressure-bearing water bags of the water injection and drainage system, so that the pressure-bearing water bag rises to the water surface and then moves integrally.
The underwater shield tunnel construction water area slurry overflow monitoring and prevention and control system can form regional monitoring points, realize large-scale monitoring, and has the advantages of accurate monitoring, simple and convenient operation and low cost;
by the underwater shield tunnel construction water area slurry overflow monitoring and preventing and controlling method, slurry overflow points can be monitored rapidly, the slurry overflow position and the slurry overflow area can be judged, and the slurry overflow position can be blocked by the pressure-bearing air bag, so that the slurry overflow is prevented from being enlarged.
Claims (6)
1. A method for monitoring, preventing and controlling the slurry leakage of the water area of the underwater shield tunnel construction is characterized in that a system for monitoring, preventing and controlling the slurry leakage of the water area of the underwater shield tunnel construction is adopted,
the slurry seepage monitoring, preventing and controlling system for the underwater shield tunnel construction water area comprises a pressure-bearing water bag, a water injection and drainage system and an air injection and drainage system;
the pressure-bearing water bag is of a flat structure, a plurality of monitoring lines are divided into the inner bottom surface of the pressure-bearing water bag, a plurality of monitoring points are distributed on each monitoring line, and each monitoring point is provided with a wireless pressure sensor and a wireless acceleration sensor; all the wireless pressure sensors and the wireless acceleration sensors are connected with a wireless data receiver through signals;
the top surface of the outer part of the pressure-bearing water bag is provided with a water inlet valve, an air inlet valve, a drain valve and an air outlet valve, so that a water injection and drainage system is communicated with the water inlet valve, and a water injection and exhaust system is communicated with the air inlet valve;
which comprises the following steps:
s1, dividing the inner bottom surface of a pressure-bearing water bag into a plurality of monitoring lines, wherein a plurality of monitoring points are distributed on each monitoring line, and each monitoring point is provided with a wireless pressure sensor and a wireless acceleration sensor; all the wireless pressure sensors and the wireless acceleration sensors are connected with a wireless data receiver through signals;
s2, correspondingly communicating the water injection and drainage system and the air injection and drainage system with a water inlet valve, a water drain valve, an air inlet valve and an air drain valve of the pressure-bearing air bag through pipelines, releasing the pressure-bearing air bag on the water surface above the monitoring area, pumping the pressure-bearing air bag through the air injection and drainage system, injecting liquid into the pressure-bearing air bag through the air injection and drainage system, and sinking the pressure-bearing air bag to the monitoring surface;
s3, monitoring in real time through feedback signals of the wireless pressure sensors and the wireless acceleration sensors of all monitoring points, measuring the ground pressure changes before, during and after tunnel excavation, judging whether slurry overflow occurs on a monitoring surface, and determining the slurry overflow position and the slurry overflow area according to the quantity and the range of the pressure value changes of the monitoring points;
s4, when the monitoring surface is judged to be in slurry overflow, injecting liquid into the pressure-bearing water bag through the water injection and drainage system to pressurize the pressure-bearing water bag, so that the pressure-bearing water bag is tightly attached to the monitoring surface, further expansion of slurry overflow is prevented, and meanwhile, the slurry conveying, discharging and tunneling speed of the shield machine is adjusted;
s5, when the pressure-bearing water bag needs to be moved to the next monitoring surface, pumping water to the pressure-bearing water bag through the water injection and drainage system, and conveying gas through a plurality of pressure-bearing water bags of the water injection and drainage system, so that the pressure-bearing water bag rises to the water surface and then moves integrally.
2. The method for monitoring, preventing and controlling the slurry overflow in the water area of the underwater shield tunnel construction according to claim 1, wherein in the step S3, the height of the starting position of each monitoring point is set to be 0, the water pressure is P, the readings of the water pressure meters of the monitoring points are p+Δp, the balloon bulge value Δz of each monitoring point can be deduced from the following formulas (1) to (3) through the water pressure change value Δp of each monitoring point:
wherein:
Sedimentation swell value
(4)
Then, each monitoring point delta Z is drawn, each point is connected to form a line, an air bag bulge deformation curve of the monitoring pipeline is obtained, and the position and the area of the slurry discharge are judged in an auxiliary mode through the air bag bulge deformation curve.
3. The method for monitoring, preventing and controlling the slurry overflow in a water area for constructing an underwater shield tunnel according to claim 1, wherein the height difference of the monitoring lines is less than 200mm.
4. The method for monitoring, preventing and controlling the slurry overflow in the water area of the underwater shield tunnel construction according to claim 1, wherein the size of the pressure-bearing water bag is 7-8m long and 5-6m wide.
5. The method for monitoring, preventing and controlling slurry overflow in a water area for constructing an underwater shield tunnel according to claim 1, wherein the monitoring line is perpendicular to the tunnel direction or parallel to the tunnel direction.
6. The method for monitoring, preventing and controlling the slurry overflow in a water area under construction of an underwater shield tunnel according to claim 1, wherein the water injection and drainage system comprises a water tank, a pressure water pump and a water suction pump, and the air injection and exhaust system comprises an air compressor and a vacuum pump.
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| CN110374605B (en) * | 2019-07-01 | 2024-03-26 | 天津大学 | Device and method for measuring soil pressure outside water bag type shield tunnel |
| CN110486044A (en) * | 2019-08-05 | 2019-11-22 | 中交二公局铁路工程有限公司 | High and cold ultra-shallow earth-covered area's shield-tunneling construction prevention grout tool and method |
| CN210464435U (en) * | 2019-08-22 | 2020-05-05 | 中铁十二局集团第二工程有限公司 | Sand cobble stratum shield tunneling strong disturbance area deformation monitoring system |
| CN211824858U (en) * | 2020-04-20 | 2020-10-30 | 郑州大学 | Shield constructs around originating/arrival section tunnel stratum water and soil pressure monitoring devices |
| CN111878084B (en) * | 2020-07-15 | 2022-09-13 | 中铁十八局集团有限公司 | Rapid treatment method for controlling surface subsidence by using large-diameter shield construction in case of meeting stratum funnel |
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